Shower pump advice sought

[flutterbye]

Hi

We're thinking of installing a shower pump for a new bathroom and I have some questions. Our house has a standard vented system with large open cold tank in loft and hw cylinder in airinb cupboard. The tanks are around 30-40 years old. The mains pressure is very high here and for that reason I've fitted a Honeywell presure reducer.

There are 2 bathrooms but we're thinking of doing up just one and would like a shower with quite a lot of flow. I'm not sure about going as far as a rain drencher but certainly a lot better than the current 1M head above the shower.

I was thinking about upgrading to an unvented system but the cost and the worry about all the existing pipework that could leak put me off. So I started looking at shower pumps.

Would something like a STuart Turner monsoon be very noisy?
Would 3bar be more than enough for a really good shower?

Also, should I get a twin pump for pumping from cold and hot tanks or should I use a single pump for the hot water and get the cold from the rising main?

Finally, I noticed all the existing feeds from the cold tank are at the same level so I was thinking I may as well upgrade the tank to a potable closed one but then I though if I'm doing that why not go the whole hog and get unvented storage.

Any thoughts or advice gratefully received.

 

[muggles]

I would have thought unvented would be the way to go for you, more reliable and quieter than a pump and would serve the whole house. Get your supply tested by a qualified engineer, it sounds like you have sufficient though.

 

[ServiceNumpty]

Certainly unvented, a little bit more pipework than normal but well worth the effort.

 

[flutterbye]

Thanks for the replies. Still not sure why unvented is better than a good shower pump or even a thermal store?

 

[muggles]

Unvented is better than a pump for the reasons I've already given. Additionally, you could install secondary circulation for virtually instant hot water at all outlets (subject to the possibility of a little re-routing of pipework). Whether it's better than a thermal store is a little more debatable, though some thermal stores have suffered with clogged heat exchangers especially in hard water areas